Hamburger cooker



FIG. 1 is a top perspective view of a hamburger cooker showing my new design;

FIG. 2 is a bottom perspective view of a hamburger cooker showing my new design;

FIG. 3 is a plan view on an enlarged scale of the inside of the bottom of the hamburger cooker;

FIG. 4 is a cross-sectional view along the path defined by arrows 4 in FIG. 3;

FIG. 5 is a plan view on an enlarged scale of the inside of the top of the hamburger cooker; and

FIG. 6 is a cross-sectional view along the line 6--6 of FIG. 5. 

The ornamental design for a hamburger cooker, as shown. 